Image processor

Details Image processor Image processor

1998-07-24

2000-04-04

Tran, Phuoc

Image analysis

Image compression or coding

G06K 936, G06K 946

Patent

active

060470879

ABSTRACT:
In an image processor, image data of red, green and blue are converted to image data of lightness and chromaticities, and they are divided into pixel blocks. Then, image data of each block are compressed to data having 4 gradation levels smaller than 256 levels of the image data by generalized block truncation coding. Then a capacity of image memory can be decreased. An attribute of the image data is decided for each block according to the compressed data. The attribute can be corrected by taking attributes of adjacent blocks into account. Edition of image data such as edge emphasis can be performed according to the attributes. The compressed data are further compressed by deleting data which can be specified according to the attribute.

REFERENCES:
patent: 4797729 (1989-01-01), Tsai
patent: 4979031 (1990-12-01), Tsuboi et al.
patent: 5119182 (1992-06-01), Tsuboi et al.
patent: 5293252 (1994-03-01), Kim et al.
patent: 5341442 (1994-08-01), Barrett
patent: 5361147 (1994-11-01), Katayama et al.
patent: 5367629 (1994-11-01), Chu et al.
patent: 5491761 (1996-02-01), Kim
patent: 5585944 (1996-12-01), Rodriguez
patent: 5861960 (1999-01-01), Suzuki et al.

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